package day04;
import java.util.Scanner;
public class CommandBySwitch {
    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);//新建一个扫描器 叫scan
        System.out.println("请选择功能:1.存款 2.取款 3.查询余额 4.退卡");
       int command = scan.nextInt();

       switch(command) {
           case 1:
               System.out.println("存款...");
               break;
           case 2:
               System.out.println("取款...");
               break;
           case 3:
               System.out.println("查询余额...");
               break;
           case 4:
               System.out.println("退款...");
               break;
           default:
               System.out.println("输入错误");
       }
    }
}
